i have a 96 sc300 na-t with the t61 on it...and tuned by the map-ecu..my problem is on hard accel it sputters/lags but once it gets up on the rpms its fine...one thing i noticed that whoever had this car before removed that whole variable intake system...so i dnt know if that would be one of the reasons?? or maybe jst need to get this thing tuned better...any ideas/input will be appriciated.

and also did a full tune up already as well

 

Stock injectors? Maybe too rich? If you dose the gas on the pedal the car runs fine?

 

i got 550s on there...and it mite be ive been hearin from my friends that i leave quite a cloud behind...and yea exactly if i dose on it its fine

 

wat if the fuel pressure is not high enough...maybe try throwin a adjutable fuel pressure regulator and raise the pressure??

 

Blown wastegate gasket?

 

yea i have a bigger fuel pump and 550cc injectors...wastegate gasket???would that cause somthing like that

 

??? so im probably gonna get it tuned and see wat happens